This kind of situation (bull market preparation) is used by meme coin developers to get profit on their token sale, this is quite risky because they have no benefits for network development in the crypto industry, they only rely on hype and pump to attract their investors, this is very dangerous if we are in the last entry, our money will be very difficult to return, this needs to be an important note, on the other hand it is also a separate opportunity if we become early investors, because we will get the money we save there many times more than him bitcoin or altcoin top 10, but it's a shame below 5% probability to make a profit, and I think the meme coin project has no impact on the bull market.
Deciding whether to invest or not will always rely with your own understanding, and your way of handling the risk, as if you are willing to take your chance and you are okay with riding into whatever meme projects that being hot while the market is showing a good sign of pumping hard, it's always on how you take chances, that's for those who already have an experienced on how crypto volatility works.
But for those newcomers, your set example is true because if you are only investing as someone introduces you that meme projects chances that you will be caught in the position where the value was already hype and all those early investors already dumping their assets.